Thermostat



Sept. 3, 1935- c. E. ARMSTRONG 2,013,637

THERMOSTAT Filed Nov. 18; 1951 Inventor- Chas.E.Armsfr'on9 Patented Sept. 3, 1935 UNEE'EB STATES rents;

PATENT @FFEQE 1 Claim.

The primary object of my new and improved thermostat is for regulating the temperature in any and all places where it is desired to accurately control the same.

A further object of my invention consists in providing a simply constructed device adapted for placement within the proof room and dough room of bakeries for controlling and regulating the temperature to be developed within the proof room and the dough room of the bakery.

A still further object of my invention consists in providing a simply constructed device of few parts that will automatically regulate the temperature within the proof, or dough room, or other rooms or spaces.

And a still further object of my invention consists in so constructing the assembled units that the same will operate and control, at relatively low fluctuations the temperature. The device is adapted to operate over relatively long operating periods with practical freedom from operating annoyances.

With these and incidental objects in View, the invention consists in certain novel features of construction and combination of parts, the essential elements of which are set forth in the appended claim, and a preferred form of embodiment of which is hereinafter shown with reference to the drawing which accompanies and forms a part of this specification.

In the drawing:

Fig. 1 is a perspective, end View, of my thermostat.

Fig. 2 is a sectional, plan view of my thermostat.

Fig. 3 is a sectional, side view, of the mechanism illustrated in Fig. 2.

Fig. 4 is a sectional, end view, of the mechanism illustrated in Figs. 2 and 3.

Like reference characters refer to like parts throughout the several views.

The thermostat is made with a base 44. The base 44 is adapted for suspension from any suitable suspending medium as chains 45. The chains 45 are suificiently long to permit a relatively free movement of the suspended device.

Brackets 46 outwardly extend from the base and an expanding frame is associated therewith. A cross bar 47 is fixedly secured to the brackets 46 and side bars 48 and 49 outwardly extend from the bracket 46 and the cross bar 41. A fixed cross support 50 is fixedly positioned upon the side bars 48 and 49 through any suitable fastening connection, as through the use of lock nuts 5! and 52.

A plurality of thermostat wafers 53 are disposed parallel to and mounted between the fixed cross bar 55, and a floating cross bar 5 8 that is slidably disposed upon the respective side bars 48 and 49. The wafer thermostats are secured together upon their axial line by connecting spools 53A and the outside one of the series is secured to the fixed cross bar 59 and the floating cross bar 513, respectively. Spreader guide bars 53B and 530 are also secured to the intermediate spools and slide upon the side bars 58 and 39.

Side bars 55 and 56 are parallelly disposed to the side bars 48 and 9 and the side bars 55 and 56 are secured to the floating cross bar 5 3. The side bars 55 and 55 move in suitable openings disposed within the fixed cross bar 50 that acts as a support for the same and as the wafers expand and contract due to the change in temperature the floating cross bar 54 moves toward or away from the cross bar 50 and in direct proportion to the change in temperature. A cross yoke 57! is secured to the outer end of the side bars 55 and 56 and the outer ends 58 and 59, of the side bars 38 and 39 pass through the cross yoke 51 and maintain the same in suitable position and alignment. The bracket 46 acts as a support for one end of the wafer assembly and fixes the same relative to the base. An eyebolt 6!! is secured to the fixed cross bar 47, and a threaded stem 6| is secured to and outwardly extends from the cross yoke 57. A graduated pointer 62 is secured to the cross yoke and extends parallelly to the threaded stem 6 l.

A thimble 63 is threadedly attached to the threaded stem 6 I, and an eye connection 64 terminates the outer end of the thimble. Lines, or pull cords are secured to the eyebolt on one end and to the eye 6 2 of the thimble 63 upon the oppositely disposed end, and the valve, or other mechanism to be regulated by the thermostat is adapted for being actuated by the pull of the cord. The adjustment and regulation of the thermostat to the work to be performed is predetermined by the position of the thimble relative to the graduations disposed upon the graduated bar 62.

A louvered hood 65 is adapted for being placed over the multiple wafer thermostat assembly, and for being secured to the base in any suitable manner as through the use of screws 66. Louvered opening 6'! extends through the walls of the hood to permit a free circulation of air, or steam, or vapor therethrough.

While the form of mechanism herein shown and described is adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the one form of embodiment herein shown and described, as it is susceptible of embodiment in various forms, all coming within the scope of the claim which 5 follows.

What I claim is:

In a device of the class described, the combination of a base, a plurality of brackets upwardly extending from the base, a pair of parallelly dis posed side bars fixedly secured to the brackets disposed at one end of the base, a cross bar slidably disposed upon the fixed parallelly disposed side bars, a second pair of floating parallelly disposed side bars, secured upon their one end to the slidable cross bar, a fixed cross support secured to the bracket at the opposite end of said bars, a plurality of connected wafers disposed between the cross support and the cross bar, a cross yoke fixedly mounted upon the last mentioned side bars, eye bars secured to the cross bar and the cross yoke, the eye bar secured to the cross yoke being adjustable relative thereto, and spreader guides disposed between the wafer thermostats and slidablv disposed upon the parallelly disposed side bars.

CHARLES E. ARMSTRONG. 

